From Software Engineering — NumWorks
Our device has 256 KB of RAM.
We booked 32KB for the stack.
Completely unusable. Early versions of Caml Light did run on 640k PCs with MSDOS, but 256k is beyond hope. A simple interpreted Lisp, perhaps. Forget about Python, too.
I support @yawaramin 's suggestion of a cheap Android phone or tablet. The hardware is tremendously more powerful and software is portable across many devices.